Hi Philip, I did a little bit of research / testing with this and unfortunately it would appear the only thing you specify is the view name. The default behavior is to show the first page of the Visio when it loads on the router control panel. So, in your case, you'd want to put the page you want displayed first as the first in the Visio file. I'm not sure of your exact use case, but if you don't want to alter whatever view you are linking in the RC Visio, you could also create a view that is used only for the Router Control panel and modify the Visio accordingly.

I'm not sure if you're aware, but we do have now a new Feature Requests section that allows you to submit feature ideas if you are so inclined: DataMiner Feature Suggestions - DataMiner Dojo

Hope this helps!